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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 | 4x 4x 4x 4x 6x 24x 4x 4x 7x 4x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 4x 4x 17x 17x 4x 12x 4x 6x 3x 3x 4x 6x 6x 6x 6x 6x 6x 4x 6x 6x 4x 6x 6x 6x 6x 6x 4x 14x 14x 14x 4x 4x 7x 7x 7x 49x 49x 49x 49x 16x 7x | /* Copyright 2015-2018 OCAD University Licensed under the Educational Community License (ECL), Version 2.0 or the New BSD license. You may not use this file except in compliance with one these Licenses. You may obtain a copy of the ECL 2.0 License and BSD License at https://github.com/fluid-project/infusion/raw/master/Infusion-LICENSE.txt */ /* global speechSynthesis, SpeechSynthesisUtterance*/ var fluid_3_0_0 = fluid_3_0_0 || {}; (function ($, fluid) { "use strict"; /********************************************************************************************* * fluid.window is a singleton component to be used for registering event bindings to * * events fired by the window object * *********************************************************************************************/ fluid.defaults("fluid.window", { gradeNames: ["fluid.component", "fluid.resolveRootSingle"], singleRootType: "fluid.window", members: { window: window }, listeners: { "onCreate.bindEvents": { funcName: "fluid.window.bindEvents", args: ["{that}"] } } }); /** * Adds a lister to a window event for each event defined on the component. * The name must match a valid window event. * * @param {Component} that - the component itself */ fluid.window.bindEvents = function (that) { fluid.each(that.options.events, function (type, eventName) { window.addEventListener(eventName, that.events[eventName].fire); }); }; /********************************************************************************************* * fluid.textToSpeech provides a wrapper around the SpeechSynthesis Interface * * from the Web Speech API ( https://w3c.github.io/speech-api/speechapi.html#tts-section ) * *********************************************************************************************/ fluid.registerNamespace("fluid.textToSpeech"); fluid.textToSpeech.isSupported = function () { return !!(window && window.speechSynthesis); }; /** * Ensures that TTS is supported in the browser, including cases where the * feature is detected, but where the underlying audio engine is missing. * For example in VMs on SauceLabs, the behaviour for browsers which report that the speechSynthesis * API is implemented is for the `onstart` event of an utterance to never fire. If we don't receive this * event within a timeout, this API's behaviour is to return a promise which rejects. * * @param {Number} delay - A time in milliseconds to wait for the speechSynthesis to fire its onStart event * by default it is 5000ms (5s). This is crux of the test, as it needs time to attempt to run the speechSynthesis. * @return {fluid.promise} - A promise which will resolve if the TTS is supported (the onstart event is fired within the delay period) * or be rejected otherwise. */ fluid.textToSpeech.checkTTSSupport = function (delay) { var promise = fluid.promise(); Eif (fluid.textToSpeech.isSupported()) { // MS Edge speech synthesizer won't speak if the text string is blank, // so this must contain actual text var toSpeak = new SpeechSynthesisUtterance("short"); // short text to attempt to speak toSpeak.volume = 0; // mutes the Speech Synthesizer // Same timeout as the timeout in the IoC testing framework var timeout = setTimeout(function () { fluid.textToSpeech.invokeSpeechSynthesisFunc("cancel"); promise.reject(); }, delay || 5000); toSpeak.onend = function () { clearTimeout(timeout); fluid.textToSpeech.invokeSpeechSynthesisFunc("cancel"); promise.resolve(); }; fluid.textToSpeech.invokeSpeechSynthesisFunc("speak", toSpeak); } else { fluid.invokeLater(promise.reject); } return promise; }; /********************************************************************************************* * fluid.textToSpeech component *********************************************************************************************/ fluid.defaults("fluid.textToSpeech", { gradeNames: ["fluid.modelComponent", "fluid.resolveRootSingle"], singleRootType: "fluid.textToSpeech", events: { onStart: null, onStop: null, onError: null, onSpeechQueued: null, utteranceOnBoundary: null, utteranceOnEnd: null, utteranceOnError: null, utteranceOnMark: null, utteranceOnPause: null, utteranceOnResume: null, utteranceOnStart: null }, members: { queue: [] }, components: { wndw: { type: "fluid.window", options: { events: { beforeunload: null } } } }, dynamicComponents: { utterance: { type: "fluid.textToSpeech.utterance", createOnEvent: "onSpeechQueued", options: { listeners: { "onBoundary.relay": "{textToSpeech}.events.utteranceOnBoundary.fire", "onEnd.relay": "{textToSpeech}.events.utteranceOnEnd.fire", "onError.relay": "{textToSpeech}.events.utteranceOnError.fire", "onMark.relay": "{textToSpeech}.events.utteranceOnMark.fire", "onPause.relay": "{textToSpeech}.events.utteranceOnPause.fire", "onResume.relay": "{textToSpeech}.events.utteranceOnResume.fire", "onStart.relay": "{textToSpeech}.events.utteranceOnStart.fire", "onCreate.queue": { "this": "{fluid.textToSpeech}.queue", method: "push", args: ["{that}"] }, "onEnd.destroy": { func: "{that}.destroy", priority: "last" } }, utterance: "{arguments}.0" } } }, // Model paths: speaking, pending, paused, utteranceOpts, pauseRequested, resumeRequested model: { // Changes to the utteranceOpts will only affect text that is queued after the change. // All of these options can be overridden in the queueSpeech method by passing in // options directly there. It is useful in cases where a single instance needs to be // spoken with different options (e.g. single text in a different language.) utteranceOpts: { // text: "", // text to synthesize. Avoid using, it will be overwritten by text passed in directly to a queueSpeech // lang: "", // the language of the synthesized text // voice: {} // a WebSpeechSynthesis object; if not set, will use the default one provided by the browser // volume: 1, // a Floating point number between 0 and 1 // rate: 1, // a Floating point number from 0.1 to 10 although different synthesizers may have a smaller range // pitch: 1, // a Floating point number from 0 to 2 } }, modelListeners: { "speaking": { listener: "fluid.textToSpeech.toggleSpeak", args: ["{that}", "{change}.value"] }, "pauseRequested": { listener: "fluid.textToSpeech.requestControl", args: ["{that}", "pause", "{change}"] }, "resumeRequested": { listener: "fluid.textToSpeech.requestControl", args: ["{that}", "resume", "{change}"] } }, invokers: { queueSpeech: { funcName: "fluid.textToSpeech.queueSpeech", args: ["{that}", "{arguments}.0", "{arguments}.1", "{arguments}.2"] }, cancel: { funcName: "fluid.textToSpeech.cancel", args: ["{that}"] }, pause: { changePath: "pauseRequested", value: true, source: "pause" }, resume: { changePath: "resumeRequested", value: true, source: "resume" }, getVoices: { func: "{that}.invokeSpeechSynthesisFunc", args: ["getVoices"] }, speak: { func: "{that}.invokeSpeechSynthesisFunc", args: ["speak", "{that}.queue.0.utterance"] }, invokeSpeechSynthesisFunc: "fluid.textToSpeech.invokeSpeechSynthesisFunc" }, listeners: { "onSpeechQueued.speak": { func: "{that}.speak", priority: "last" }, "utteranceOnStart.speaking": { changePath: "speaking", value: true, source: "utteranceOnStart" }, "utteranceOnEnd.stop": { funcName: "fluid.textToSpeech.handleEnd", args: ["{that}"] }, "utteranceOnError.forward": "{that}.events.onError", "utteranceOnPause.pause": { changePath: "paused", value: true, source: "utteranceOnPause" }, "utteranceOnResume.resume": { changePath: "paused", value: false, source: "utteranceOnResume" }, "onDestroy.cleanup": { func: "{that}.invokeSpeechSynthesisFunc", args: ["cancel"] }, "{wndw}.events.beforeunload": { funcName: "{that}.invokeSpeechSynthesisFunc", args: ["cancel"], namespace: "cancelSpeechSynthesisOnUnload" } } }); /** * Wraps the SpeechSynthesis API * * @param {String} method - a SpeechSynthesis method name * @param {Array} args - arguments to call the method with. If args isn't an array, it will be added as the first * element of one. */ fluid.textToSpeech.invokeSpeechSynthesisFunc = function (method, args) { args = fluid.makeArray(args); speechSynthesis[method].apply(speechSynthesis, args); }; fluid.textToSpeech.toggleSpeak = function (that, speaking) { that.events[speaking ? "onStart" : "onStop"].fire(); }; fluid.textToSpeech.requestControl = function (that, control, change) { // If there's a control request (value change to true), clear and // execute it if (change.value) { that.applier.change(change.path, false, "ADD", "requestControl"); that.invokeSpeechSynthesisFunc(control); } }; /* * After an utterance has finished, the utterance is removed from the queue and the model is updated as needed. */ fluid.textToSpeech.handleEnd = function (that) { that.queue.shift(); var resetValues = { speaking: false, pending: false, paused: false }; Iif (that.queue.length) { that.applier.change("pending", true, "ADD", "handleEnd.pending"); } else Eif (!that.queue.length) { var newModel = $.extend({}, that.model, resetValues); that.applier.change("", newModel, "ADD", "handleEnd.reset"); } }; /** * Options to configure the SpeechSynthesis Utterance with. * See: https://w3c.github.io/speech-api/speechapi.html#utterance-attributes * { * text: "", // the text to Synthesize * lang: "", // the language of the synthesized text * voice: {} // a WebSpeechSynthesis object; if not set, will use the default one provided by the browser * volume: 1, // a Floating point number between 0 and 1 * rate: 1, // a Floating point number from 0.1 to 10 although different synthesizers may have a smaller range * pitch: 1, // a Floating point number from 0 to 2 * } * * @typedef {Object} UtteranceOpts */ /** * Assembles the utterance options and fires onSpeechQueued which will kick off the creation of an utterance * component. If "interrupt" is true, this utterance will replace any existing ones. * * @param {Component} that - the component * @param {String} text - the text to be synthesized * @param {Boolean} interrupt - used to indicate if this text should be queued or replace existing utterances * @param {UtteranceOpts} options - options to configure the SpeechSynthesis utterance with. It is merged on top of the * utteranceOpts from the component's model. * * @return {Promise} - returns a promise that is resolved after the onSpeechQueued event has fired. */ fluid.textToSpeech.queueSpeech = function (that, text, interrupt, options) { var promise = fluid.promise(); if (interrupt) { that.cancel(); } var utteranceOpts = $.extend({}, that.model.utteranceOpts, options, {text: text}); // The setTimeout is needed for Safari to fully cancel out the previous speech. // Without this the synthesizer gets confused and may play multiple utterances at once. setTimeout(function () { that.events.onSpeechQueued.fire(utteranceOpts, interrupt); promise.resolve(text); }, 100); return promise; }; fluid.textToSpeech.cancel = function (that) { // Safari does not fire the onend event from an utterance when the speech synthesis is cancelled. // Manually triggering the onEnd event for each utterance as we empty the queue, before calling cancel. while (that.queue.length) { var utterance = that.queue.shift(); utterance.events.onEnd.fire(); } that.invokeSpeechSynthesisFunc("cancel"); // clear any paused state. that.invokeSpeechSynthesisFunc("resume"); }; /********************************************************************************************* * fluid.textToSpeech.utterance component *********************************************************************************************/ fluid.defaults("fluid.textToSpeech.utterance", { gradeNames: ["fluid.modelComponent"], members: { utterance: { expander: { funcName: "fluid.textToSpeech.utterance.construct", args: ["{that}", "{that}.options.utteranceEventMap", "{that}.options.utterance"] } } }, model: { boundary: 0 }, utterance: { // text: "", // text to synthesize. avoid as it will override any other text passed in // lang: "", // the language of the synthesized text // voice: {} // a WebSpeechSynthesis object; if not set, will use the default one provided by the browser // volume: 1, // a Floating point number between 0 and 1 // rate: 1, // a Floating point number from 0.1 to 10 although different synthesizers may have a smaller range // pitch: 1, // a Floating point number from 0 to 2 }, utteranceEventMap: { onboundary: "onBoundary", onend: "onEnd", onerror: "onError", onmark: "onMark", onpause: "onPause", onresume: "onResume", onstart: "onStart" }, events: { onBoundary: null, onEnd: null, onError: null, onMark: null, onPause: null, onResume: null, onStart: null }, listeners: { "onBoundary.updateModel": { changePath: "boundary", value: "{arguments}.0.charIndex" } } }); /** * Creates a SpeechSynthesisUtterance instance and configures it with the utteranceOpts and utteranceMap. For any * event provided in the utteranceEventMap, any corresponding event binding passed in directly through the * utteranceOpts will be rebound as component event listeners with the "external" namespace. * * @param {Component} that - the component * @param {Object} utteranceEventMap - a mapping from SpeechSynthesisUtterance events to component events. * @param {UtteranceOpts} utteranceOpts - options to configure the SpeechSynthesis utterance with. * * @return {SpeechSynthesisUtterance} - returns the created SpeechSynthesisUtterance object */ fluid.textToSpeech.utterance.construct = function (that, utteranceEventMap, utteranceOpts) { var utterance = new SpeechSynthesisUtterance(); $.extend(utterance, utteranceOpts); fluid.each(utteranceEventMap, function (compEventName, utteranceEvent) { var compEvent = that.events[compEventName]; var origHandler = utteranceOpts[utteranceEvent]; utterance[utteranceEvent] = compEvent.fire; if (origHandler) { compEvent.addListener(origHandler, "external"); } }); return utterance; }; })(jQuery, fluid_3_0_0); |